Equal volumes of solutions of the given concentrations are mixed together. Which of the resulting aqueous solutions makes a buffer?
A) 0.1 M HCl + 0.2 M CaCl2
B) 0.1 M HCl + 0.2 M NH3
C) 0.1 M CH3COOH + 0.2 M NaOH
D) 0.1 M CH3COONa + 0.2 M NaOH
E) 0.25 M HCl + 0.2 M NH3

Answers

Answer 1

The resulting aqueous solutions makes a buffer is 0.1 M CH3COONa + 0.2 M NaOH makes a buffer. The correct answer is D.

A buffer solution is made up of a weak acid and its conjugate base (or a weak base and its conjugate acid) in roughly equal amounts. In option D, we have acetic acid (CH3COOH) and its conjugate base (CH3COONa) in equal volumes of 0.1 M and 0.2 M, respectively. Therefore, it can act as a buffer solution.

Option A is a mixture of a strong acid (HCl) and a salt of a strong acid and strong base (CaCl2).

Option B is a mixture of a strong acid (HCl) and a weak base (NH3), but the concentrations are not equal.

Option C is a mixture of a weak acid (CH3COOH) and a strong base (NaOH), but the concentrations are not equal.

Option E is a mixture of a strong acid (HCl) and a weak base (NH3), but the concentrations are not equal.

Therefore, the correct answer is D.

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Related Questions

Given that a particular photon has a frequency of 2.2 x 10'7 Hz, calculate the photon's energy. Submit your answer in
scientific notation, rounded to two significant figures.
The energy of the photon is
X10

Answers

Answer:

E = 15×10⁻²⁹ J

Explanation:

Given data:

Frequency of photon = 2.2× 10⁷ Hz

Energy of photon = ?

Solution:

Formula:

E = h.f

h = 6.63×10⁻³⁴ Js

by putting values,

E = 6.63×10⁻³⁴ Js × 2.2× 10⁷ s⁻¹

E = 14.586 ×10⁻²⁹ J

E = 15×10⁻²⁹ J

The energy of photon is 15×10⁻²⁹ J.

whats a known example of physical vs chemical changes?

Whats a known example of physical vs chemical properties?​

Answers

a. Example of physical change: Melting of ice

Example of chemical change: Burning of paper

b. Example of physical property: Density of a substance

Example of chemical property: Reactivity of a substance

a. A known example of a physical change is the change of state of water. When water is heated, it undergoes a physical change from a solid state (ice) to a liquid state (water) and further to a gaseous state (water vapor). The chemical composition of water remains the same throughout these changes, and only the arrangement and energy of the water molecules change.

On the other hand, a known example of a chemical change is the combustion of wood. When wood is burned, it undergoes a chemical change where the molecules of wood react with oxygen from the air to produce carbon dioxide, water vapor, and other combustion products. The chemical composition of wood is altered during this process, and new substances are formed.

b. Physical properties are characteristics of a substance that can be observed or measured without changing its chemical composition. For example, the physical properties of water include its boiling point, melting point, density, color, and transparency. These properties describe how water behaves and reacts under different conditions, but they do not involve any changes in its chemical identity.

Chemical properties, on the other hand, describe the ability of a substance to undergo chemical changes and react with other substances. For example, the ability of iron to rust when exposed to oxygen and moisture is a chemical property. It involves a chemical reaction where iron reacts with oxygen to form iron oxide.

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solve for it?


show all work for me as well please ASAP!!​

solve for it?show all work for me as well please ASAP!!

Answers

Answer: The pressure will be 411 GH.

Explanation:

To calculate the final pressure of the system, we use the equation given by Gay Lussac Law. This law states that pressure of the gas is directly proportional to the temperature of the gas at constant volume

Mathematically,

\(\frac{P_1}{T_1}=\frac{P_2}{T_2}\)

where,

\(P_1\text{ and }T_1\) are the initial pressure and temperature of the gas.

\(P_2\text{ and }T_2\) are the final pressure and temperature of the gas.

We are given:

\(P_1=570\\T_1=2.33\\P_2=?\\T_2=1.68\)

Putting values in above equation, we get:

\(\frac{570}{2.33}=\frac{P_2}{1.68}\\\\P_2=411\)

Thus the pressure will be 411 GH.

An aqueous solution of methanol is 45.0% methanol by volume. find the volume of methanol in
a 250.0-ml sample of the solution. find the volume of water in this sample of the solution.

Answers

The Mole Fraction can be computed by dividing the number of moles of one solution component by the sum of all the moles of the solution's components.

Is methanol an acidic solution?

Because it was previously primarily created by the destructive distillation of wood, the polar solvent known as methanol also goes by the term wood alcohol. Methanol is mostly made industrially today by hydrogenating carbon monoxide.

Methanol has an acidity that is 36.0 kJ/mol higher in the gas phase than water, but they are nearly the same in aqueous solution. The inherent gas-phase ionisation Gibbs energy and the solvent effects work together to define how acidic solution of an acid is.

Any solution's mole fraction is defined as the moles of solute divided by the total of the solute and solvent moles.

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If 120 cm3 of oxygen gas is collected at 27 oC and 713.3 mm Hg pressure, what will the volume (in cm3) of the dry gas be at STP?

Answers

If 120 cm³ of oxygen gas is collected at 713.3 mm Hg pressure, the volume of the dry gas at STP is 0.102 cm³.

How do you calculate  the volume of the dry gas to be at STP?

To solve this problem, we will use the ideal gas law, which relates the pressure, volume, temperature, and number of moles of a gas:

PV = nRT

First, we need to convert the given conditions to the correct units. The temperature is already in Celsius, so we need to convert it to kelvins by adding 273.15:

T = 27 + 273.15 = 300.15 K

The pressure is given in millimeters of mercury (mm Hg), so we need to convert it to atmospheres (atm) to use in the ideal gas law. There are 760 mm Hg in 1 atm, so:

P = 713.3 mm Hg / 760 mm Hg/atm = 0.938 atm

Next, we can use the ideal gas law to find the number of moles of oxygen gas:

n = PV/RT = (0.938 atm)(120 cm³)/(0.08206 L·atm/(mol·K))(300.15 K) = 0.00454 mol

Finally, we can use the molar volume of a gas at STP (standard temperature and pressure) to find the volume of the dry gas at STP. At STP, the temperature is 273.15 K and the pressure is 1 atm. The molar volume of a gas at STP is 22.4 L/mol, so:

V = n(22.4 L/mol) = (0.00454 mol)(22.4 L/mol) = 0.102 cm³

Therefore, the volume of the dry gas at STP is 0.102 cm³.

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4) Aside from the noble gases, which are inert (nonreactive), which group
of elements would have very high ionization energies?
Alkali Metals
Alkaline Earth Metals
Boron Group
Carbon Group
Nitrogen Group
Oxygen Group
Halogens

Answers

Answer:

halogens...................

One clue of a chemicals change is the formation of a precipitate (new solid) A precipitate is formed when

Answers

A precipitate is formed when : D) Two liquids react and a solid is formed.

When is a precipitate formed?

A precipitate is formed when two liquids react and a solid is formed as product. This is a clear indication that chemical change has occurred as the reactants have undergone chemical reaction to form new substance that is different from original reactants.

In contrast, when solid dissolves in liquid, it forms homogeneous solution and no precipitate is formed. Similarly, when one liquid dissolves in another, it forms homogeneous mixture and no precipitate is formed.

If two liquids react and gas is produced, this may also indicate chemical change, but it would not necessarily result in the formation of precipitate.

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Note: The question given on the portal is incomplete. Here is the complete question.

Question: One clue of a chemicals change is the formation of a precipitate (new solid) A precipitate is formed when:

a) Two liquids react and gas is produced

b) Solid dissolves in a liquid

c) One liquid dissolves in another

d) Two liquids react and solid is formed

What errors in concentration are introduced when only dilution?.

Answers

The errors in concentration which are introduced when only dilution include the following:

Incorrect measurement of the sample Insufficient mixingContamination

What is Dilution?

This is the process in which the concentration of a solute in a solution is decreased and it's usually done by adding water to it.

When performing dilution, errors which may occur include incorrect measurement and contamination of the samples.

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Which of the following is the correct definition of chemical energy?
A. energy stored in chemical bonds of molecules
B.
energy an object has because of its motion or position
C.
energy of an object due to the random motion of its atoms and molecules
D.
energy produced from the splitting of atoms

Answers

Answer:

A

Explanation:

energy stored in chemical bonds of molecules

Explain in terms of structure and bonding why carbon dioxide has a low boiling point and calcium carbide has a high boiling point

Answers

Answer:

See explanation

Explanation:

Let us consider the two compounds carefully. Carbon dioxide is purely a non-polar molecular compound while the bond between the C2^2- ion and Ca^2+ is ionic thereby making CaC2 an ionic compound.

Recall that ionic compounds have high melting and boiling points due to strong ionic interactions in the structure of the compound.

On the other hand, CO2 is a non-polar substance whose molecules are held together only by weak dispersion forces.

As a result of the reasons outlined above, carbon dioxide has a low boiling point and calcium carbide has a high boiling point.

design a synthesis of 5-methyl-3-heptene (both e and z isomers) any compound having four carbons or fewer.

Answers

To synthesize 5-methyl-3-heptene, both the E and Z isomers, starting from a compound with four carbons or fewer, we can follow the following synthetic pathway:

Step 1: Start with 1-butyne

We begin with 1-butyne, a compound with four carbons.

Step 2: Hydroboration

Perform hydroboration of 1-butyne using borane (BH3) in the presence of a basic solution. This reaction converts the triple bond into a double bond while adding a boron atom.

Step 3: Oxidation

Perform oxidation of the boron intermediate from step 2 using hydrogen peroxide (H2O2) in basic conditions. This oxidation converts the boron into a hydroxyl group (OH).

Step 4: Acid-Catalyzed Rearrangement

Subject the hydroxyl group obtained from step 3 to acid-catalyzed rearrangement. This rearrangement involves the migration of the methyl group to the terminal carbon, resulting in the formation of 5-methyl-3-hexene.

Step 5: Alkene Isomerization

Perform alkene isomerization by heating 5-methyl-3-hexene in the presence of an acid catalyst. This process converts the E isomer into the Z isomer of 5-methyl-3-hexene.

Step 6: Additional Carbon

Add an additional carbon atom to the Z isomer of 5-methyl-3-hexene. This can be achieved by subjecting the Z isomer to a suitable reaction, such as a Grignard reaction or a Wittig reaction, using a suitable carbon-containing reagent. The choice of the specific reaction will depend on the availability of reagents and desired synthetic pathway.

Finally, the resulting product will be 5-methyl-3-heptene, both the E and Z isomers.

It is important to note that the specific reaction conditions, reagents, and detailed reaction mechanisms may vary depending on the specific starting materials and desired synthetic route. It is advisable to consult literature or a chemical synthesis handbook for more detailed guidance on reaction conditions and specific procedures.

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design a synthesis of 5-methyl-3-heptene (both e and z isomers) any compound having four carbons or fewer.

use the glycerol and lauric acid molecules provided and modify as needed and construct a fat or oil molecule. らPrint ■ Calculator Periodic Table Ebook。 Question 25 of 29 (1 point) H3 H3 glycerol lauric acid O Hint Check AnswerView Solution Progress:1 19 20 21 2 23 252 Progress: 〈 Progress: < 18 19 20 21 22 23 24 25 26 Exit Activity

Answers

The glycerol and lauric acid molecules combine and will form triglycerides or the Trilaurin.

Trilaurin is the triglyceride obtained by the formal acylation of the three hydroxy groups of the glycerol by the lauric acid (dodecanoic) acid. This is the  triglyceride and the dodecanoate ester.

Glycerol is the naturally occurring alcohol with the formula of C₃H₈O₃.  Lauric Acid is the saturated medium chain of the fatty acid with the  12-carbon backbone. The formula is C₁₂H₂₄O₂. The Triglycerides is the type of fat (lipid) that is found in the blood. When we eat, the body will converts the calories. The glycerol and the lauric acid fors the triglycerides.

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use the glycerol and lauric acid molecules provided and modify as needed and construct a fat or oil molecule.

A carboxylic acid reacts with water to form a carboxylate ion and H3O+ . Complete the reaction.reaction:C6H5COOH+H2Oâ½ââWrite the IUPAC name of the carboxylate ion formed in the reaction.IUPAC name:

Answers

The carboxylate ion formed in the reaction is known as the acetate ion, with the chemical formula C₂H₃O₂-. Its IUPAC name is ethanoate.

What is chemical formula?

A chemical formula is an expression that states the number and type of atoms present in a molecule of a substance. It consists of symbols representing elements in the periodic table, and subscripts to indicate the number of atoms of each element present in the molecule. For example, the chemical formula for water is H₂O, which indicates that there are two hydrogen atoms and one oxygen atom in each molecule of water. Chemical formulas are essential for understanding the chemical makeup of substances and the reactions they undergo.

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The quality of a two-phase liquid–vapor mixture of h2o at 40°c with a specific volume of 10 m3/kg is.

Answers

The quality of the two-phase liquid-vapor mixture of H2O at 40°C with a specific volume of 10 m3/kg is approximately 0.1176 or 11.76%.

The quality of a two-phase liquid-vapor mixture is the fraction of the total mass that is in the vapor phase. The specific volume of a substance is the volume occupied by one kilogram of that substance.

Since the mixture is two-phase, it means it is a combination of liquid and vapor phases. At a given temperature and pressure, the quality of a mixture is determined by its specific volume.

Given:

Temperature of mixture (T) = 40°C

Specific volume of mixture (v) = 10 m3/kg

Using the saturated water table, we can find that at 40°C, the specific volume of the saturated liquid (vf) is 0.001067 m3/kg and the specific volume of the saturated vapor (vg) is 0.08608 m3/kg.

Since the mixture is two-phase, we can use the following equation to calculate the quality:

x = (v - vf)/(vg - vf)

where x is the quality of the mixture.

Plugging in the values, we get:

x = (10 - 0.001067)/(0.08608 - 0.001067)

x = 0.1176

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a chemical company makes a silver by reacting silver nitrate would see the company needs to make 800 g of pure silver for a client they have 300 g of zinc and 600 g of silver nitrate will they be able to make enough silver to fill the order

Answers

Answer

Explanation

Given that:

The mass of pure silver needed = 800 g

Mass of zinc = 300 g

Mass of silver nitrate = 600 g

What to find:

Will the mass of zinc and silver nitrate be able to make 800 g of pure silver.

Step-by-step solution:

Step 1: Write the balanced equation for the reaction.

Zn + 2AgNO₃ → 2Ag + Zn(NO₃)₂

Step 2: Determine the moles of the reactants.

Using the mole formula, the moles of the reactants will be:

\(\begin{gathered} Moles\text{ }of\text{ }Zn=\frac{Mass}{Molar\text{ }mass}=\frac{300g}{65.38g\text{/}mol}=4.5886\text{ }mol \\ \\ Moles\text{ }of\text{ }AgNO_3=\frac{600g}{169.87g\text{/}mol}=3.5321\text{ }mol \end{gathered}\)

Step 3: Determine the moles of pure silver produced.

Using the mole ratio of Zn to AgNO₃ in the equation and the moles in step 2, we

crystal structure of argon

Answers

Answer:

Solid argon is stable in the face-centered cubic structure at all temperatures, but it is found that it can also crystallize in a metastable form with hexagonal close-packed structure. ... Small amounts of nitrogen, oxygen, or CO stabilize the hcp phase at temperatures near the melting point.

Explanation:

At STP, the volume of N2(g) produced by the complete decomposition of 1 mole of nitroglycerin would be closest to which of the following?

A.5 L
B.10 L
C.20 L
D.30 L

Answers

To determine the volume of N2(g) produced by the complete decomposition of 1 mole of nitroglycerin (C3H5N3O9), we need to consider the balanced chemical equation for the decomposition reaction.

The balanced equation for the decomposition of nitroglycerin is as follows:

4 C3H5N3O9(s) → 12 CO2(g) + 10 H2O(g) + 6 N2(g) + O2(g) From the balanced equation, we can see that for every 4 moles of nitroglycerin, 6 moles of N2(g) are produced. Since we are considering the decomposition of 1 mole of nitroglycerin, we can use this ratio to determine the moles of N2(g) produced, which is 6/4 = 1.5 moles of N2(g). Now, at STP (Standard Temperature and Pressure), 1 mole of any ideal gas occupies 22.4 liters. Therefore, 1.5 moles of N2(g) would occupy approximately 33.6 liters

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Explain how patterns in the periodic table can provide evidence that explains how the structure of each element is different from another.​

Answers

The elements are arranged in periods and groups. They are also arranged by the way they react to other chemicals, or the chemicals that are mixed in the element to make it.

The evidence that explains how the structure of each element is different from another is that the elements are arranged in periods and groups.

The periodic table refers to the tabular display of the chemical elements. It should be noted that the periodic table is arranged based on the increasing atomic number of the elements.

The elements that are in the periodic table are also arranged by the way they react to other chemicals. Therefore, the elements that are in a particular group typically have the same characteristics.

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How does fog rising off water compare to plant growth?

Answers

The humidity in the air affects the evapotranspiration rate from the leaf surfaces. ... The use of fog and mist at this time can reduce the air temperature and increase the humidity within the plant canopy without saturating the plant medium. With more oxygen in the root zone, faster rooting occurs.

The humidity in the air affects the evapotranspiration rate from the leaf surfaces. ... The use of fog and mist at this time can reduce the air temperature and increase the humidity within the plant canopy without saturating the plant medium. With more oxygen in the root zone, faster rooting occurs.

1. How many atoms are present in 64.0g of Oxygen?

Answers

Answer. molar mass of oxygen is 16 grams, it means that 1 mole oxygen weighs 16 grams. therefore 64 gram oxygen = 64/16 = 4 mole oxygen. 1 mole of any element contains 6.022 * 10^23 atoms in it

The number of atoms present in 64.0g of Oxygen are 24.092 × 10²³.

What are atoms?

Atoms are the number of molecules that are present in an element. The atoms will be of the same species or different species. Atoms also contain charged particles that constitute the atomic number or atomic mass.

The molar mass of oxygen is 16 grams, which means that 1 mole of oxygen weighs 16 grams.

Therefore, 64-gram oxygen

To calculate the moles, the mass is divided by the molar mass

Putting the value in the formula

64/16 = 4 mole oxygen.

1 mole of any element contains 6.022 x 10²³ atoms in it.

The number of Oxygen atoms in 64 grams of Oxygen gas is

24.088 × 10²³ = 24.092 × 10²³

Thus, the atoms present in 64.0g of Oxygen are 24.092 × 10²³.

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the gas generated by the reaction of hydrochloric acid and zinc metal is collected in the apparatus shown in part i and allowed to equilibrate to the barometric pressure. the barometric pressure is 755 mm hg at 18oc. what is the total pressure of all gases inside the container?

Answers

The total pressure inside the container would be 755 mmHg (barometric pressure) plus the partial pressure of the collected hydrogen gas.

The total pressure of all gases inside the container can be determined by adding the partial pressure of the collected gas to the barometric pressure.

Given that the barometric pressure is 755 mmHg, we need to find the partial pressure of the collected gas. Since the gas is generated by the reaction of hydrochloric acid and zinc metal, it is likely hydrogen gas (H2) that is being collected.

To find the partial pressure of hydrogen gas, we can use Dalton's Law of Partial Pressures, which states that the total pressure of a gas mixture is equal to the sum of the partial pressures of each individual gas component.

Therefore, the total pressure inside the container would be 755 mmHg (barometric pressure) plus the partial pressure of the collected hydrogen gas.

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An elementary step is characterized by its _____, which is equal to the number of reactant particles in the step. multiple choice question. order molarity concentration molecularity.

Answers

An elementary step is characterized by its molecularity which is equal to the number of reactant particles in the step

What is Elementary step of reaction ?

A one-step reaction is referred to as an elementary reaction. The coefficients of the reactants in the balanced equation can be used to get the rate law for an elementary reaction. For instance, rate = k[A]2[B] is the rate rule for the elementary reaction 2A + B products.

The sum of the stoichiometric coefficients of the reactants in the chemical equation of the reaction determines the molecularity of the chemical reaction. It can also mean the quantity of reactant molecules involved in a particular reaction step.

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Radiometric Dating Group of answer choices none of above is a geological counting method is a system of reasoning that is used to determine the chronological sequence or order of a series of geologic events all of above uses the natural phenomenon of radioactive decay of radioactive isotopes within minerals to calculate their chronological age

Answers

Radiometric dating is a geological counting method that uses the natural phenomenon of radioactive decay to determine the chronological age of minerals.

How does radiometric dating determine chronological age using radioactive decay?

Radiometric dating is a powerful technique used in geology to determine the chronological sequence or order of a series of geologic events. It relies on the principle that certain elements, known as radioactive isotopes, undergo spontaneous decay over time.

This decay process results in the formation of stable isotopes and the release of radiation. By measuring the ratio of parent isotopes to daughter isotopes in a sample, scientists can calculate the amount of time that has elapsed since the mineral formed.

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22. What is the difference between lodine-130 and lodine-131?

Answers

The first radioiodine isotopes to be used to treat thyrotoxicosis were iodine-130 and iodine-131 in 1941, and thyroid cancer was added to their list of uses in 1943.

What is Reactor produced radioiodine?Iodine-131, the most frequently prescribed radioiodine isotope for treating thyroid conditions, is a radioactive created in reactors and is widely available in the market. Uranium-235 isotope fission and the so-called (n, ) reaction are its two primary production processes.Iodine-131 is a radioisotope that is simple to obtain in pure form as its chain yield is quite high and radioiodine isotopes with masses higher than 131 have a short half-life. Contrarily, Technetium-130 undergoes a reaction with (n, ) to produce Technetium-131m and Technetium-131g. Depending on whether a wet chemical separation or a dry distillation process is employed, TeO2 or Te-metal is the target material for irradiation.Iodine-131 has a high radiochemical purity and is marketed as a diluted sodium hydroxide solution. When using iodine-131 to identify organic molecules, it may interfere if a certain reducing agent is used to preserve the isotope in the form of iodide in certain solutions.Another radioisotope created in reactors is iodine-125, which is formed when Xenon-124 undergoes the (n, ) reaction. High chemical and radiochemical purity iodine-125 is marketed as a diluted sodium hydroxide solution. It contains 4 to 11 GBq/ml of radioactive material.

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What do carnivores do and what is another name for them? PLEASE HELP

Answers

1 meat-eating, predatory, predacious. , hopefully this help :)

Question 2
How many significant figures does the number have?
23.0702

Answers

The number 23.0702 has 6 significant figures.

To answer this, you must have the rules for significant figures,

1. All non-zero numbers ARE significant
2. Zeros between two non-zero digits ARE significant
3. Leading zeros are NOT significant
4. Trailing zeros are ONLY significant if the number has a decimal point

The number 23.0702 has 4 non-zero numbers(rule 1), and both zeros are between two non-zero digits(rule 2). Since all 6 figures in the number 23.0702 are significant, the number 23.0702 has 6 significant figures.

PLZ HELP SUPER STUCK T^T *will give brainiest* (30 points) (plz hurry!! its on a test)
Question: Aluminum is an element. Which best describes what makes up a sample of aluminum? one kind of atom two different kinds of atoms all carbon-based atoms a carbon atom and non-carbon atoms

Answers

Answer:

The answer to this is A. One kind of atom

Explanation:

The other options make no sense whatsoever. But enjoy.

I hope this helped.

Answer:

A. One kind of atom

Explanation:

What is Dalton’s Law as it applies to partial pressures?

Answers

Answer:

According to Dalton's law of partial pressures, the total pressure by a mixture of gases is equal to the sum of the partial pressures of each of the constituent gases. The partial pressure is defined as the pressure each gas would exert if it alone occupied the volume of the mixture at the same temperature.

Select 3 that apply
What are the equations for the chemical reactions that took place when the acids reacted with active metals?
Zn(s) + 2HCl(aq) → ZnH2 (aq)+ Cl2↑
Mg(s) + 2HCl(aq) → MgH2 (aq)+ Cl2↑
Cu(s) + HCl → nothing happened
Mg(s) + 2HCl(aq) → MgCl2 (aq)+ H2↑
Cu(s) + HCl(aq) → CuCl (aq)+ H2↑
Zn(s) + 2HCl(aq) → ZnCl2 (aq)+ H2↑

Answers

The reaction that take place when active metals react with acids are:

Mg (s) + 2HCl (aq) → MgCl₂ (aq) + H₂ (g)Zn (s) + 2 HCl (aq) → ZnCl₂ (aq) + H₂ (g)

What are active metals?

Active metals are those metals which are very reactive and are found high above hydrogen in the activity series of metals.

The reactivity of metals is determined by the ability of the meta to give up electrons to form positive ions called cations.

Therefore, active metals are those metals that readily give up their electrons to form cations.

The active metals are found in the group 1A and 2A and 3A of the periodic table.

The active metals include; sodium, potassium, calcium, aluminum, magnesium, zinc etc.

The active metals react with dilute acids to displace hydrogen, resulting in the evolution of hydrogen gas.

Considering the given equations, the reactions of the active metals are:

Mg (s) + 2HCl (aq) → MgCl₂ (aq) + H₂ (g)

Zn (s) + 2 HCl (aq) → ZnCl₂ (aq) + H₂ (g)

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how many kilometers are in a 5.44 mile race

Answers

Answer: 8.754831

Explanation:

Answer: 8. 75 kilometers

Explanation:  5.44x 1.609344= 8.7548 Kilometers

Other Questions
Which of the following best describes the rationale for colonial resistance to the Proclamation of 1763?a.) The colonists believed the Proclamation would provoke another war with the Native American tribes who continued to reside in the Ohio Valley.b.) The colonists had fought a bloody war for the right to expand their western boundaries.c.) The colonists believed the British had no legal authority to restrict their movement in North America.d.) By the end of the French-Indian War, the colonists had forged an independent identity and no longer recognized British law. Work is done when youA .you lift a bookB .you stand on the floor C .you hold a box D .you push against a wall The highest temperature ever recorded in chicago was 105F and the lowest was -27F use absolute values to find the difference between the highest and the lowest temperatures freya realizes she does not have enough in her bank account to use the debit card. she decides to use a credit card instead. which questions should freya answer before using a credit card? check all that apply. A line has a slope of 9 and includes the points (10,5) and (q,4). What is the value of q? Write in ordinary form2.8 x 10'5 1.A bank has two tellers working on savings accounts. The first teller handles withdrawals only. The second teller handles deposits only. It has been found that the service time distributions for both deposits and withdrawals are exponential with mean service time of 4 minutes per customer. Depositors are found to arrive in a Poison fashion with mean arrival rate of 20 per hour. Withdrawers also arrive in a Poison fashion with mean arrival rate of 17 per hour. What would be the effect on the average waiting time for the customers, if each teller could handle both withdrawals and deposits? What would be the effect, if this could only be accomplished by increasing the service time to 5 minutes a 38-year-old client is obese and has abscesses around the inner thigh muscles. the client is receiving iv antibiotics, but no improvement has been seen. the client questions the nurse about the most likely cause for the drug therapy failure. the nurse explains that the: A hypothesis determines . . .What is an independent variable? An investor that would like to retain ownership but also protect shares of KO in their portfolio from dropping below exactly $50/share could choose to place which one of the following orders? A) Market Order B) Day Limit Order C) Good Until Cancelled Limit Order D) Day Stop Order E) Good Until Cancelled Stop OrderA.D & EB.A onlyC. B & CD. B and D help help help help help help help help help help help help help help help help help help help help help help help help help help 2. problem 4.3.4 for a constant parameter , a rayleigh random variable x has pdf what is the cdf of x? a disadvantage of the current design of mobile apps like myfitnesspal is that they are able to fulfill only one need at a time. true or false? PART B: Which of the following best supports the answer to Part A? Describe Americas transformation into an arsenal of democracy. What new and lasting technologies were developed? What did these technologies come to symbolize? Additional data for the current year are as follows: (a) Net income, $75,800. (b) Depreciation reported on income statement, $38,000. (c) Fully depreciated equipment costing $60,000 was scrapped, no salvage, and equipment was purchased for $150,000. (d) Bonds payable for $75,000 were retired by payment at their face amount. (e) 2,500 shares of common stock were issued at $30 for cash. (f) Cash dividends declared and paid, $40,000. (g) Investments of $100,000 were sold for $125,000. Read and look at this graphic from Citizenship. How does the graphic help readers understand that paying taxes and taking part in jury duty are legal responsibilities? The graphic demonstrates that the jury has declared the woman guilty. The graphic shows a courtroom and judge that represent the law. The graphic shows that the woman is a lawyer who is trying a case before a judge. The graphic illustrates what happens when the woman serves on a jury. Amo has three times as many marbles asEffah. Amo gives Effah 15 marbles, andThen Effah has twice as many as Amo.How many had each as first? There is a trend in the melting and boiling points of these elements. Use the to predict the following: a the melting point of sodium what powers are possessed by the house and senate